Pentax smc DA 17-70mm f/4 AL [IF] SDM
Versatile constant aperture standard zoom lens
![Pentax smc DA 17-70mm f/4 AL [IF] SDM](https://www.lightandcomposition.com/wp-content/uploads/2026/04/Pentax-smc-DA-17-70mm-f4-AL-IF-SDM-gear-image-generated.png)
Key Features
Lens Capabilities
Click the Links Below for Details
The Most Important Rings & Switches — Pentax smc DA 17-70mm f/4 AL [IF] SDM
| Ring / Switch / Control | Status | Note |
|---|---|---|
| Focus Ring | ✓ Present | Manual focus override available |
| Zoom Ring | ✓ Present | Mechanical zoom |
| Aperture Ring | ✗ Not Present | Controlled via camera body |
| AF/MF Switch | ✓ Present | |
| Image Stabilisation Switch | ✗ Not Present | Handled by camera body |
| Focus Limiter Switch | ✗ Not Present | |
| Function (L-Fn) Button | ✗ Not Present | |
| Zoom Lock Switch | ✗ Not Present | |
| Optical Image Stabilisation (OIS) | ✗ Not Present | |
| Weather Sealing | ✗ Not Present |
How-to Use Pentax smc DA 17-70mm f/4 AL [IF] SDM
Welcome to the How-to section of the lens. In this Light & Composition University website, each page for a lens has a how-to section and a section for learning. The rings, switches and controls of each lens are placed differently between brands and models. The how-to section helps you operate the lens; however, if you are interested in learning photography, you also need to know what each control changes and why you would change it. Click the “Learn” or scroll down.
Learn & Master Photography with Pentax smc DA 17-70mm f/4 AL [IF] SDM
For over a decade, we have been teaching photography following a university standard. No one does it better than us. We have a selection of courses, diplomas, graduate and post-graduate programs, as well as some of our best-selling university press publications, to guide you in the best possible way for your lens. Enroll in the fundamentals and then move to the genres you want to master.
Technical Specification
| Lens Type | Standard Zoom |
| Focal Length | 17-70mm |
| Max Aperture | f/4 |
| Min Aperture | f/22 |
| Elements/Groups | 17/12 |
| Min Focus Distance | 0.28m |
| Max Magnification | 0.31x |
| Diaphragm Blades | 7 |
| Filter Thread | 67mm |
| Weight | 485g |
| Dimensions | 75mm x 93.5mm |
